PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/28-23:43:00
G02     199.9          21.0                9.8 +/-    1.93      21.1 +/-    1.93  0.110 / 0.110
G06     175.1          50.0                9.9 +/-    0.88      12.5 +/-    0.88  0.080 / 0.110
G13     226.6          13.5                8.3 +/-   15.39      21.5 +/-   15.39  0.040 / 0.060
G17     23.4           59.0                8.5 +/-    0.54       9.8 +/-    0.54  0.070 / 0.080
G19     320.7          71.2                7.4 +/-    0.86       7.7 +/-    0.86  0.040 / 0.030
G24     309.1          30.7                8.7 +/-    1.70      15.0 +/-    1.70  0.040 / 0.030
G28     84.6           43.1               10.1 +/-    0.78      14.0 +/-    0.78  0.150 / 0.250
G30     156.8          14.2               10.9 +/-    1.60      27.6 +/-    1.60  0.100 / 0.200