PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-05:58:00
G02     231.0          74.0                3.3 +/-    0.47       3.4 +/-    0.47  0.220 / 0.330
G05     172.9          12.7                5.2 +/-    2.25      13.7 +/-    2.25  0.200 / 0.220
G06     42.5           66.4                2.8 +/-    0.39       3.0 +/-    0.39  0.060 / 0.080
G12     320.9          45.6                3.0 +/-    0.88       4.1 +/-    0.88  0.060 / 0.080
G17     66.8           26.0                0.9 +/-    3.21       1.8 +/-    3.21  0.020 / 0.030
G19     52.9           41.2                1.3 +/-    2.03       1.8 +/-    2.03  0.030 / 0.040
G24     251.7          37.4                5.1 +/-    1.28       7.8 +/-    1.28  0.030 / 0.040