PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/31-11:43:00
G02     228.9          68.7                3.1 +/-    0.97       3.3 +/-    0.97  0.040 / 0.030
G06     42.9           64.1                2.2 +/-    0.62       2.4 +/-    0.62  0.030 / 0.040
G12     321.3          47.4                2.2 +/-    0.67       2.9 +/-    0.67  0.050 / 0.070
G17     67.4           23.7                4.0 +/-    2.25       8.0 +/-    2.25  0.080 / 0.100
G19     48.0           44.9                5.1 +/-    0.60       6.9 +/-    0.60  0.030 / 0.030
G24     246.9          37.6                3.5 +/-    1.03       5.3 +/-    1.03  0.030 / 0.030
G25     315.5          11.2              -12.6 +/-   24.94     -34.4 +/-   24.94  0.520 / 0.390