PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-01:57:40
G10     264.6          36.8               11.6 +/-    1.04      17.8 +/-    1.04  0.050 / 0.090
G13     43.0           20.0                7.9 +/-    2.57      17.5 +/-    2.57  0.050 / 0.080
G15     63.3           52.0                9.4 +/-    0.60      11.5 +/-    0.60  0.200 / 0.250
G16     279.8          13.0                8.9 +/-    1.67      23.2 +/-    1.67  0.220 / 0.220
G20     282.4          51.9                9.5 +/-    0.65      11.8 +/-    0.65  0.200 / 0.250
G21     355.4          70.0               10.0 +/-    0.95      10.5 +/-    0.95  0.210 / 0.220
G24     121.2          13.0               13.7 +/-    3.44      35.8 +/-    3.44  0.210 / 0.340
G27     319.6          17.1                8.4 +/-    2.06      20.0 +/-    2.06  0.120 / 0.410
G29     168.1          34.5               11.7 +/-    1.14      18.7 +/-    1.14  0.050 / 0.040