PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/19-05:57:40
G02     349.7          78.7                2.5 +/-    0.42       2.6 +/-    0.42  0.070 / 0.080
G05     163.8          33.1                4.5 +/-    0.64       7.5 +/-    0.64  0.060 / 0.070
G06     40.7           43.7                2.7 +/-    1.15       3.7 +/-    1.15  0.090 / 0.230
G12     313.6          68.4                3.1 +/-    0.41       3.3 +/-    0.41  0.180 / 0.250
G17     84.8           13.4                3.6 +/-    2.11       9.3 +/-    2.11  0.070 / 0.040
G19     74.3           27.7                2.5 +/-    1.94       4.5 +/-    1.94  0.040 / 0.040
G24     230.1          23.7                5.4 +/-    1.95      10.9 +/-    1.95  0.030 / 0.030
G25     317.6          27.1                2.7 +/-    2.32       5.0 +/-    2.32  0.030 / 0.030