PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-10:58:10
G02     22.7           64.5                3.6 +/-    0.53       3.9 +/-    0.53  0.030 / 0.030
G05     155.2          49.8                6.1 +/-    0.61       7.7 +/-    0.61  0.020 / 0.040
G06     45.8           31.2                3.8 +/-    0.97       6.5 +/-    0.97  0.030 / 0.020
G12     247.7          78.7                6.2 +/-    0.43       6.3 +/-    0.43  0.030 / 0.030
G19     90.3           16.5                5.2 +/-    1.92      12.5 +/-    1.92  0.170 / 0.410
G20     198.8          11.9               -1.3 +/-   11.86      -3.6 +/-   11.86  0.290 / 0.670
G24     217.9          11.8                2.3 +/-    1.26       6.1 +/-    1.26  0.050 / 0.080
G25     310.6          43.9                6.4 +/-    1.00       8.8 +/-    1.00  0.080 / 0.060
G29     300.0          22.3                6.6 +/-    1.47      13.7 +/-    1.47  0.050 / 0.050