PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-21:42:40
G01     38.5           11.7                8.5 +/-    3.71      22.8 +/-    3.71  0.090 / 0.200
G02     199.3          14.7               16.7 +/-    1.27      41.8 +/-    1.27  0.090 / 0.180
G06     172.7          46.6               12.6 +/-    1.31      16.6 +/-    1.31  0.150 / 0.270
G13     232.8          17.8               15.4 +/-    2.43      35.8 +/-    2.43  0.180 / 0.270
G17     4.8            67.9               11.7 +/-    0.95      12.5 +/-    0.95  0.040 / 0.090
G19     294.5          70.4               11.2 +/-    0.53      11.8 +/-    0.53  0.050 / 0.070
G24     314.0          24.4                9.3 +/-    2.17      18.3 +/-    2.17  0.140 / 0.370
G28     80.0           43.4               10.3 +/-    0.92      14.2 +/-    0.92  0.110 / 0.280
G30     155.7          20.4               13.8 +/-    1.36      30.0 +/-    1.36  0.060 / 0.060