PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/16-15:13:00
G10     276.2          43.6                5.0 +/-    1.32       6.9 +/-    1.32  0.040 / 0.040
G13     38.8           11.7                2.6 +/-    9.89       7.1 +/-    9.89  0.030 / 0.040
G15     52.8           43.5                4.7 +/-    0.83       6.5 +/-    0.83  0.110 / 0.170
G20     314.3          63.3                5.0 +/-    0.62       5.5 +/-    0.62  0.090 / 0.150
G21     41.9           75.7                4.8 +/-    0.64       4.9 +/-    0.64  0.410 / 0.320
G24     109.2          19.0                6.4 +/-    1.88      14.4 +/-    1.88  0.520 / 0.610
G27     315.8          22.7                3.4 +/-    1.68       6.9 +/-    1.68  0.100 / 0.070
G29     167.4          21.6                4.6 +/-    1.41       9.7 +/-    1.41  0.080 / 0.050
G32     205.8          15.5                7.0 +/-    1.63      17.2 +/-    1.63  0.130 / 0.160