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                4.2 +/-    0.73       6.9 +/-    0.73  0.040 / 0.060
G07     138.4          29.8                5.0 +/-    1.28       8.7 +/-    1.28  0.030 / 0.050
G11     54.3           31.7                3.1 +/-    0.82       5.3 +/-    0.82  0.030 / 0.040
G13     273.4          37.0                6.6 +/-    1.12      10.2 +/-    1.12  0.030 / 0.040
G15     300.4          16.1                3.7 +/-    2.27       9.0 +/-    2.27  0.040 / 0.070
G17     236.0          69.0                6.5 +/-    0.70       6.9 +/-    0.70  0.040 / 0.080
G19     225.6          43.9                8.7 +/-    0.98      11.9 +/-    0.98  0.050 / 0.100
G28     23.6           58.6                3.9 +/-    0.33       4.5 +/-    0.33  0.050 / 0.140