PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-22:57:40
G07     327.7          55.8                7.3 +/-    0.40       8.7 +/-    0.40  0.140 / 0.170
G08     107.7          51.0                8.7 +/-    0.34      10.8 +/-    0.34  0.090 / 0.170
G09     203.4          77.9                9.7 +/-    0.34       9.9 +/-    0.34  0.040 / 0.040
G11     149.9          10.2               -3.1 +/-   17.43      -8.5 +/-   17.43  0.040 / 0.040
G16     45.7           11.0                6.9 +/-    2.03      19.0 +/-    2.03  0.150 / 0.340
G23     153.9          44.4               10.1 +/-    0.92      13.8 +/-    0.92  0.160 / 0.370
G27     57.7           32.7                6.2 +/-    1.09      10.3 +/-    1.09  0.050 / 0.070
G28     235.0          27.5                8.1 +/-    2.16      14.9 +/-    2.16  0.060 / 0.070
G30     301.6          36.3                8.2 +/-    1.83      12.7 +/-    1.83  0.050 / 0.050