PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/01-17:43:10
G01     125.9          11.8               12.1 +/-    4.96      32.3 +/-    4.96  0.030 / 0.030
G07     70.5           65.5               10.8 +/-    0.61      11.8 +/-    0.61  0.040 / 0.040
G08     49.8           38.6                9.9 +/-    0.87      14.7 +/-    0.87  0.060 / 0.080
G09     178.9          36.8               12.8 +/-    1.31      19.6 +/-    1.31  0.070 / 0.080
G11     116.2          36.4               12.4 +/-    0.81      19.1 +/-    0.81  0.050 / 0.060
G13     320.6          13.0               10.0 +/-    2.99      26.1 +/-    2.99  0.040 / 0.070
G17     199.4          15.7               14.3 +/-    1.20      35.0 +/-    1.20  0.140 / 0.370
G18     101.0          16.9               11.0 +/-    0.82      26.1 +/-    0.82  0.130 / 0.370
G28     272.1          49.6               10.9 +/-    1.54      13.8 +/-    1.54  0.090 / 0.300
G30     336.5          62.9               10.3 +/-    0.70      11.5 +/-    0.70  0.100 / 0.360