PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/01-22:27:50
G01     113.2          21.5               12.2 +/-    0.84      25.9 +/-    0.84  0.080 / 0.180
G07     99.5           58.8               11.8 +/-    0.82      13.5 +/-    0.82  0.080 / 0.180
G08     42.5           24.3                7.4 +/-    1.11      14.8 +/-    1.11  0.050 / 0.060
G09     176.2          20.4               11.5 +/-    1.05      25.2 +/-    1.05  0.040 / 0.060
G11     96.0           42.1               11.4 +/-    0.65      16.1 +/-    0.65  0.040 / 0.030
G13     314.0          24.8                9.6 +/-    0.65      18.8 +/-    0.65  0.040 / 0.030
G17     202.2          32.8               12.8 +/-    1.76      21.2 +/-    1.76  0.080 / 0.220
G18     83.9           22.3                8.9 +/-    1.43      18.6 +/-    1.43  0.070 / 0.240
G28     298.4          57.6                9.6 +/-    0.67      11.2 +/-    0.67  0.040 / 0.040
G30     359.9          73.9               10.6 +/-    0.96      11.0 +/-    0.96  0.040 / 0.050