PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-15:12:40
G02     207.8          41.6                7.3 +/-    1.69      10.3 +/-    1.69  0.070 / 0.070
G06     119.2          77.8                6.7 +/-    0.60       6.9 +/-    0.60  0.060 / 0.080
G12     314.2          27.9                6.5 +/-    1.31      11.8 +/-    1.31  0.060 / 0.120
G17     46.2           40.5                6.9 +/-    0.76       9.9 +/-    0.76  0.060 / 0.130
G19     12.3           61.4                6.5 +/-    0.94       7.3 +/-    0.94  0.030 / 0.030
G24     283.7          42.6                5.0 +/-    1.04       6.9 +/-    1.04  0.030 / 0.030
G28     111.2          24.7                7.5 +/-    1.28      14.7 +/-    1.28  0.040 / 0.040