PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/23-08:43:10
G02     302.3          81.3                3.0 +/-    0.86       3.0 +/-    0.86  0.210 / 0.150
G05     168.4          25.8                4.1 +/-    2.41       7.9 +/-    2.41  0.130 / 0.190
G06     39.5           49.0                2.7 +/-    0.73       3.5 +/-    0.73  0.050 / 0.040
G12     318.7          62.9                3.3 +/-    0.76       3.7 +/-    0.76  0.040 / 0.040
G17     81.3           13.2                4.0 +/-    2.13      10.4 +/-    2.13  0.040 / 0.040
G19     66.9           33.1                3.7 +/-    3.44       6.1 +/-    3.44  0.030 / 0.040
G24     229.7          26.6                4.2 +/-    2.11       7.9 +/-    2.11  0.090 / 0.130
G25     317.3          28.0                2.9 +/-    1.82       5.2 +/-    1.82  0.090 / 0.100