PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/19-10:27:40
G02     58.6           31.8                4.1 +/-    0.94       6.9 +/-    0.94  0.030 / 0.020
G05     63.9           64.8                7.0 +/-    0.55       7.7 +/-    0.55  0.020 / 0.030
G12     183.2          34.9                8.7 +/-    0.85      13.8 +/-    0.85  0.050 / 0.080
G13     128.7          12.9                7.3 +/-    2.06      19.0 +/-    2.06  0.050 / 0.100
G15     162.3          12.1                2.4 +/-   16.60       6.4 +/-   16.60  0.210 / 0.370
G21     269.9          16.4                5.0 +/-    3.14      12.0 +/-    3.14  0.210 / 0.400
G25     240.2          53.9                8.4 +/-    4.20      10.1 +/-    4.20  0.040 / 0.040
G29     326.1          50.8                5.7 +/-    0.75       7.2 +/-    0.75  0.040 / 0.050