PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/22-00:57:50
G08     265.5          18.1               11.8 +/-    1.57      27.3 +/-    1.57  0.040 / 0.030
G10     60.3           59.0                9.1 +/-    0.72      10.4 +/-    0.72  0.030 / 0.030
G11     310.4          18.6                8.6 +/-    2.21      19.5 +/-    2.21  0.200 / 0.280
G14     270.3          67.7                8.7 +/-    0.76       9.4 +/-    0.76  0.180 / 0.200
G18     92.0           36.3                8.1 +/-    1.13      12.5 +/-    1.13  0.020 / 0.020
G21     153.9          13.7               10.1 +/-    4.19      25.9 +/-    4.19  0.020 / 0.030
G24     40.2           11.2                7.5 +/-    3.59      20.3 +/-    3.59  0.160 / 0.220
G27     230.2          15.2               13.7 +/-    2.05      33.9 +/-    2.05  0.190 / 0.220
G31     180.0          28.7               12.7 +/-    2.23      22.8 +/-    2.23  0.050 / 0.120
G32     327.7          74.2                8.2 +/-    0.80       8.5 +/-    0.80  0.060 / 0.090