PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/23-19:58:00
G01     267.7          40.9                9.8 +/-    1.04      14.0 +/-    1.04  0.060 / 0.100
G03     316.2          31.3                9.1 +/-    1.85      15.5 +/-    1.85  0.070 / 0.090
G10     130.8          14.5               10.2 +/-    1.47      25.6 +/-    1.47  0.040 / 0.070
G11     247.0          18.7               10.7 +/-    1.26      24.3 +/-    1.26  0.050 / 0.100
G14     46.4           48.3                2.3 +/-    0.61       2.9 +/-    0.61  0.140 / 0.220
G18     227.7          36.7               10.3 +/-    1.28      15.9 +/-    1.28  0.160 / 0.240
G22     313.6          53.5                8.1 +/-    1.13       9.8 +/-    1.13  0.110 / 0.220
G25     46.1           12.7                5.9 +/-    1.07      15.5 +/-    1.07  0.130 / 0.330
G31     56.0           76.6                7.8 +/-    0.81       8.0 +/-    0.81  0.040 / 0.070
G32     65.2           32.1                6.5 +/-    0.67      10.8 +/-    0.67  0.050 / 0.070