PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-14:43:00
G01     38.9           12.2                7.0 +/-    1.78      18.7 +/-    1.78  0.070 / 0.130
G02     200.2          11.1                1.8 +/-    7.41       5.0 +/-    7.41  0.090 / 0.140
G06     174.1          44.5               10.3 +/-    0.64      14.0 +/-    0.64  0.150 / 0.240
G13     235.5          18.8                8.3 +/-    3.51      18.7 +/-    3.51  0.250 / 0.140
G17     15.9           64.5                7.9 +/-    0.60       8.7 +/-    0.60  0.080 / 0.170
G19     300.7          72.0                7.7 +/-    0.83       8.1 +/-    0.83  0.280 / 0.190
G24     315.5          21.9                5.7 +/-    2.14      11.9 +/-    2.14  0.030 / 0.030
G28     78.7           43.9                7.1 +/-    1.28       9.7 +/-    1.28  0.040 / 0.030
G30     156.1          24.1                9.4 +/-    1.57      18.8 +/-    1.57  0.190 / 0.470