PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-23:57:40
G02     17.4           66.9                4.7 +/-    0.39       5.0 +/-    0.39  0.050 / 0.090
G05     154.8          48.4               10.1 +/-    1.11      13.0 +/-    1.11  0.060 / 0.070
G06     45.5           29.5                6.6 +/-    0.46      11.7 +/-    0.46  0.120 / 0.510
G12     266.8          78.8                6.8 +/-    0.81       6.9 +/-    0.81  0.130 / 0.490
G19     87.5           18.1               10.0 +/-    1.20      23.0 +/-    1.20  0.030 / 0.040
G24     217.6          12.7               13.2 +/-    2.51      34.6 +/-    2.51  0.050 / 0.040
G25     311.8          41.9                6.3 +/-    2.37       8.9 +/-    2.37  0.030 / 0.030
G29     297.7          20.4                8.5 +/-    1.12      18.5 +/-    1.12  0.020 / 0.040