PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/16-15:42:30
G10     294.0          50.9                5.2 +/-    0.90       6.5 +/-    0.90  0.040 / 0.040
G15     46.8           31.6                3.4 +/-    0.68       5.8 +/-    0.68  0.030 / 0.040
G20     346.3          65.4                3.5 +/-    0.61       3.8 +/-    0.61  0.040 / 0.040
G21     94.4           72.7                6.0 +/-    0.64       6.3 +/-    0.64  0.040 / 0.040
G24     95.7           25.0                5.7 +/-    1.27      11.1 +/-    1.27  0.070 / 0.120
G27     305.4          31.2                4.4 +/-    1.26       7.5 +/-    1.26  0.080 / 0.130
G32     209.6          28.4                6.4 +/-    2.31      11.5 +/-    2.31  0.070 / 0.080