PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-00:13:00
G01     124.0          14.2               10.3 +/-    2.69      26.0 +/-    2.69  0.060 / 0.170
G07     63.8           68.8                7.9 +/-    0.73       8.4 +/-    0.73  0.130 / 0.210
G08     48.8           38.3                6.2 +/-    0.51       9.3 +/-    0.51  0.040 / 0.060
G09     178.6          33.0               10.6 +/-    1.61      17.4 +/-    1.61  0.030 / 0.060
G11     117.1          36.8                9.3 +/-    0.93      14.3 +/-    0.93  0.030 / 0.070
G13     320.4          14.0                5.6 +/-    3.05      14.3 +/-    3.05  0.040 / 0.050
G17     201.0          17.6               10.0 +/-    1.42      23.3 +/-    1.42  0.020 / 0.030
G28     283.6          55.3                8.7 +/-    0.78      10.4 +/-    0.78  0.030 / 0.040
G30     346.4          67.0                6.9 +/-    0.58       7.5 +/-    0.58  0.060 / 0.100