PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-20:27:40
G01     40.2           14.9               10.4 +/-    1.36      26.0 +/-    1.36  0.120 / 0.320
G02     199.4          10.2                1.8 +/-   24.34       5.1 +/-   24.34  0.130 / 0.310
G06     173.5          42.2               15.5 +/-    1.01      21.7 +/-    1.01  0.060 / 0.150
G13     236.1          20.7               16.2 +/-    1.39      35.0 +/-    1.39  0.080 / 0.180
G15     269.8          11.5               14.6 +/-    2.28      39.5 +/-    2.28  0.120 / 0.270
G17     358.2          70.5               13.3 +/-    0.83      14.1 +/-    0.83  0.090 / 0.210
G19     280.0          68.7               13.0 +/-    0.54      13.8 +/-    0.54  0.190 / 0.340
G24     315.7          21.2               10.3 +/-    3.21      22.0 +/-    3.21  0.270 / 0.460
G28     74.5           45.7               12.9 +/-    0.43      17.2 +/-    0.43  0.050 / 0.060
G30     155.0          25.0               16.5 +/-    2.10      32.3 +/-    2.10  0.060 / 0.080