PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/08-11:42:50
G08     263.9          14.0                4.6 +/-    2.78      11.7 +/-    2.78  0.040 / 0.040
G10     76.4           54.5                5.0 +/-    0.44       6.0 +/-    0.44  0.030 / 0.050
G11     306.5          20.6                2.9 +/-    1.67       6.4 +/-    1.67  0.220 / 0.300
G14     283.4          67.9                5.7 +/-    0.57       6.1 +/-    0.57  0.160 / 0.140
G18     307.0          37.9                3.6 +/-    1.31       5.4 +/-    1.31  0.120 / 0.320
G22     300.7          12.8                4.7 +/-    2.69      12.4 +/-    2.69  0.110 / 0.300
G31     175.0          41.4                5.5 +/-    0.74       7.9 +/-    0.74  0.100 / 0.350
G32     7.0            68.0                4.2 +/-    0.33       4.5 +/-    0.33  0.090 / 0.340