PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/23-11:28:10
G02     200.7          18.2                2.6 +/-    0.83       6.0 +/-    0.83  0.080 / 0.210
G06     169.0          53.6                5.6 +/-    1.10       6.8 +/-    1.10  0.080 / 0.210
G13     226.4          14.0                4.4 +/-    1.79      11.2 +/-    1.79  0.100 / 0.140
G17     18.0           62.0                3.9 +/-    0.37       4.4 +/-    0.37  0.090 / 0.160
G19     326.0          71.7                3.8 +/-    0.65       4.0 +/-    0.65  0.020 / 0.040
G24     311.0          27.7                5.2 +/-    1.82       9.5 +/-    1.82  0.020 / 0.040
G28     81.2           46.1                3.8 +/-    1.58       5.0 +/-    1.58  0.160 / 0.460
G30     157.6          16.9                3.7 +/-    1.98       8.9 +/-    1.98  0.130 / 0.510