PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-03:58:10
G08     273.7          20.5                8.2 +/-    2.19      17.8 +/-    2.19  0.130 / 0.290
G10     48.3           60.7                5.4 +/-    0.95       6.1 +/-    0.95  0.210 / 0.310
G14     251.7          59.7                7.7 +/-    1.00       8.8 +/-    1.00  0.120 / 0.140
G18     315.3          25.9                7.1 +/-    1.19      13.6 +/-    1.19  0.110 / 0.170
G20     73.0           56.8               16.6 +/-    0.84      19.4 +/-    0.84  0.220 / 0.230
G21     153.6          22.7                9.9 +/-    2.40      20.4 +/-    2.40  0.100 / 0.310
G24     42.1           13.7                4.4 +/-    3.92      11.3 +/-    3.92  0.040 / 0.050
G27     237.1          20.4               11.7 +/-    2.25      25.5 +/-    2.25  0.040 / 0.050
G31     178.1          25.3                7.3 +/-    1.91      14.2 +/-    1.91  0.250 / 0.300
G32     320.4          76.5                6.6 +/-    0.55       6.8 +/-    0.55  0.240 / 0.280