PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-20:12:50
G01     59.2           30.3               11.0 +/-    0.65      19.1 +/-    0.65  0.090 / 0.300
G07     142.8          21.9               15.0 +/-    0.77      31.6 +/-    0.77  0.090 / 0.310
G11     48.3           23.8                9.8 +/-    0.83      19.8 +/-    0.83  0.040 / 0.050
G13     261.7          34.9               13.8 +/-    0.69      22.0 +/-    0.69  0.040 / 0.050
G15     293.4          16.2               10.3 +/-    1.38      25.0 +/-    1.38  0.050 / 0.050
G17     255.8          73.8               14.2 +/-    0.63      14.8 +/-    0.63  0.060 / 0.060
G18     42.0           12.6                8.7 +/-    0.69      23.0 +/-    0.69  0.070 / 0.160
G19     233.5          50.1               13.8 +/-    0.84      17.4 +/-    0.84  0.080 / 0.210
G28     37.7           56.3               12.4 +/-    0.83      14.5 +/-    0.83  0.060 / 0.130
G30     144.1          50.4               14.3 +/-    1.32      17.9 +/-    1.32  0.050 / 0.150