PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/20-15:12:30
G02     22.2           62.9                4.7 +/-    0.70       5.2 +/-    0.70  0.130 / 0.180
G05     153.9          53.4                7.6 +/-    0.77       9.2 +/-    0.77  0.120 / 0.250
G06     49.4           21.0                4.5 +/-    2.63       9.7 +/-    2.63  0.040 / 0.040
G12     212.2          76.2                4.2 +/-    0.56       4.3 +/-    0.56  0.040 / 0.040
G19     93.7           12.7                5.4 +/-    2.95      14.2 +/-    2.95  0.030 / 0.040
G25     307.2          46.6                8.3 +/-    1.08      11.0 +/-    1.08  0.030 / 0.040
G29     300.9          21.6                6.7 +/-    2.11      14.3 +/-    2.11  0.090 / 0.180