PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-01:58:00
G01     69.0           32.7                3.7 +/-    1.18       6.1 +/-    1.18  0.030 / 0.040
G07     138.4          29.8                5.5 +/-    0.98       9.7 +/-    0.98  0.030 / 0.040
G11     54.3           31.7                3.4 +/-    1.26       5.7 +/-    1.26  0.050 / 0.070
G13     273.4          37.0                6.3 +/-    2.22       9.6 +/-    2.22  0.050 / 0.060
G15     300.4          16.1                3.2 +/-    1.41       7.7 +/-    1.41  0.040 / 0.090
G17     236.0          69.0                6.1 +/-    0.34       6.5 +/-    0.34  0.060 / 0.100
G19     225.6          43.9                6.8 +/-    2.34       9.3 +/-    2.34  0.030 / 0.060
G28     23.6           58.6                4.2 +/-    2.84       4.8 +/-    2.84  0.030 / 0.030