PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/20-01:28:10
G03     190.0          17.5                6.1 +/-    2.31      14.4 +/-    2.31  0.200 / 0.390
G07     295.8          41.2                3.2 +/-    1.32       4.6 +/-    1.32  0.200 / 0.340
G08     136.8          32.3               19.9 +/-    1.14      33.3 +/-    1.14  0.080 / 0.110
G09     320.5          72.9                3.4 +/-    0.56       3.5 +/-    0.56  0.080 / 0.130
G16     42.3           31.7                2.3 +/-    1.79       3.9 +/-    1.79  0.030 / 0.040
G23     129.8          75.0                3.6 +/-    0.65       3.7 +/-    0.65  0.030 / 0.040
G27     93.2           35.2                5.3 +/-    0.67       8.3 +/-    0.67  0.060 / 0.120
G30     276.6          13.0                5.0 +/-    2.95      13.0 +/-    2.95  0.060 / 0.120