PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-03:27:50
G02     204.3          42.3                5.8 +/-    0.88       8.1 +/-    0.88  0.100 / 0.130
G06     155.1          73.7                5.5 +/-    0.68       5.8 +/-    0.68  0.090 / 0.120
G12     310.2          18.4                3.8 +/-    2.20       8.6 +/-    2.20  0.080 / 0.100
G17     39.4           46.9                2.9 +/-    1.90       3.8 +/-    1.90  0.080 / 0.150
G19     12.7           61.7                3.4 +/-    0.64       3.8 +/-    0.64  0.040 / 0.020
G24     292.3          40.0                2.6 +/-    8.69       3.8 +/-    8.69  0.030 / 0.030
G28     108.0          26.9                5.4 +/-    0.91      10.0 +/-    0.91  0.040 / 0.060