PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/31-23:27:40
G07     328.6          56.2                8.7 +/-    1.43      10.2 +/-    1.43  0.030 / 0.060
G08     106.2          51.2               13.0 +/-    0.76      16.2 +/-    0.76  0.030 / 0.060
G09     201.4          77.3               10.6 +/-    1.12      10.9 +/-    1.12  0.110 / 0.230
G11     149.3          10.6                1.6 +/-   27.35       4.5 +/-   27.35  0.090 / 0.250
G16     45.9           10.8                7.3 +/-    1.23      20.1 +/-    1.23  0.190 / 0.480
G23     154.2          44.0               12.9 +/-    1.34      17.7 +/-    1.34  0.110 / 0.540
G27     57.1           32.4                8.5 +/-    0.48      14.2 +/-    0.48  0.050 / 0.070
G28     235.4          28.0               12.5 +/-    2.20      22.8 +/-    2.20  0.050 / 0.080
G30     301.9          36.4               10.1 +/-    1.01      15.6 +/-    1.01  0.050 / 0.080