PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/27-06:27:50
G01     66.3           32.2                3.7 +/-    1.59       6.3 +/-    1.59  0.060 / 0.100
G07     139.3          25.7                6.5 +/-    2.60      12.5 +/-    2.60  0.070 / 0.100
G11     50.2           26.7                2.3 +/-    2.63       4.3 +/-    2.63  0.040 / 0.030
G13     269.0          37.3                6.1 +/-    2.46       9.3 +/-    2.46  0.040 / 0.030
G15     301.0          14.9               -0.1 +/-    2.77      -0.3 +/-    2.77  0.060 / 0.120
G17     244.2          75.2                6.4 +/-    0.26       6.6 +/-    0.26  0.050 / 0.110
G19     226.7          42.9                6.1 +/-    1.73       8.5 +/-    1.73  0.040 / 0.040
G28     22.8           59.1                5.8 +/-    1.43       6.6 +/-    1.43  0.040 / 0.040
G30     139.6          59.7                6.7 +/-    0.47       7.6 +/-    0.47  0.030 / 0.030