PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-18:27:50
G01     96.2           30.2               11.7 +/-    0.54      20.4 +/-    0.54  0.030 / 0.030
G07     120.2          50.4               13.6 +/-    0.47      17.0 +/-    0.47  0.030 / 0.050
G08     42.0           13.6                6.9 +/-    1.10      17.7 +/-    1.10  0.070 / 0.150
G11     75.9           42.0               12.7 +/-    0.91      17.9 +/-    0.91  0.070 / 0.140
G13     300.4          34.0               13.3 +/-    1.32      21.4 +/-    1.32  0.030 / 0.050
G17     211.7          45.4               16.7 +/-    1.08      22.4 +/-    1.08  0.020 / 0.060
G18     69.6           24.7               10.6 +/-    1.15      20.9 +/-    1.15  0.040 / 0.080
G19     212.6          20.8               16.4 +/-    2.56      35.3 +/-    2.56  0.040 / 0.070
G28     339.1          61.9               10.7 +/-    0.57      12.0 +/-    0.57  0.070 / 0.170
G30     83.9           78.5               13.1 +/-    0.80      13.4 +/-    0.80  0.090 / 0.160