PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/28-22:12:50
G01     39.7           14.0                9.2 +/-    1.07      23.4 +/-    1.07  0.230 / 0.440
G02     199.1          12.0               22.0 +/-    2.05      58.8 +/-    2.05  0.070 / 0.410
G06     173.8          43.1               16.4 +/-    0.93      22.7 +/-    0.93  0.050 / 0.070
G13     235.3          19.9               17.0 +/-    0.92      37.5 +/-    0.92  0.050 / 0.100
G15     268.1          11.1               12.8 +/-    3.01      34.7 +/-    3.01  0.080 / 0.180
G17     357.1          70.4               12.1 +/-    0.69      12.8 +/-    0.69  0.070 / 0.160
G19     285.1          69.6               11.5 +/-    0.66      12.2 +/-    0.66  0.080 / 0.200
G24     315.4          21.9                8.5 +/-    3.32      17.8 +/-    3.32  0.080 / 0.180
G28     76.2           45.0               13.1 +/-    0.74      17.6 +/-    0.74  0.190 / 0.260
G30     155.0          23.1               16.4 +/-    1.80      33.5 +/-    1.80  0.120 / 0.310