PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/19-01:43:10
G01     65.5           32.1                6.4 +/-    1.42      10.7 +/-    1.42  0.040 / 0.050
G07     140.0          27.1                8.1 +/-    2.33      15.0 +/-    2.33  0.050 / 0.050
G11     52.3           29.7                6.0 +/-    1.21      10.7 +/-    1.21  0.030 / 0.030
G13     269.6          36.5                7.3 +/-    1.64      11.3 +/-    1.64  0.030 / 0.030
G15     297.7          16.5                6.7 +/-    2.08      16.1 +/-    2.08  0.040 / 0.060
G17     242.2          71.2                7.5 +/-    0.44       7.8 +/-    0.44  0.070 / 0.060
G19     228.1          46.6                7.7 +/-    2.21      10.1 +/-    2.21  0.100 / 0.110
G28     28.7           57.8                7.6 +/-    2.18       8.8 +/-    2.18  0.100 / 0.110
G30     139.2          52.8                7.6 +/-    0.72       9.3 +/-    0.72  0.050 / 0.080