PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-03:13:10
G01     38.6           11.8                3.8 +/-    2.71      10.2 +/-    2.71  0.070 / 0.070
G02     198.8          15.6                6.0 +/-    1.63      14.6 +/-    1.63  0.060 / 0.060
G06     175.6          44.1                5.2 +/-    1.62       7.2 +/-    1.62  0.070 / 0.060
G13     233.5          18.0                4.7 +/-    2.74      10.8 +/-    2.74  0.060 / 0.050
G17     9.3            66.6                2.7 +/-    0.70       2.9 +/-    0.70  0.040 / 0.030
G19     298.9          71.3                2.3 +/-    0.79       2.5 +/-    0.79  0.030 / 0.030
G24     314.5          23.5                2.1 +/-    1.81       4.2 +/-    1.81  0.090 / 0.130
G28     80.1           43.2                4.0 +/-    0.99       5.5 +/-    0.99  0.160 / 0.130
G30     154.6          17.5                5.3 +/-    2.02      12.5 +/-    2.02  0.190 / 0.290