PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/18-12:57:30
G02     43.6           46.3                1.2 +/-    0.82       1.5 +/-    0.82  0.030 / 0.050
G05     113.9          70.1                4.4 +/-    0.54       4.7 +/-    0.54  0.030 / 0.040
G12     189.0          53.0                4.6 +/-    1.88       5.6 +/-    1.88  0.030 / 0.030
G25     262.8          60.5                3.4 +/-    1.04       3.8 +/-    1.04  0.040 / 0.040
G29     316.7          38.8                3.5 +/-    0.70       5.3 +/-    0.70  0.050 / 0.060