PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/15-01:27:50
G01     83.5           33.0                4.4 +/-    1.30       7.2 +/-    1.30  0.040 / 0.040
G07     130.3          40.8                5.7 +/-    0.80       8.3 +/-    0.80  0.040 / 0.050
G11     65.1           38.9                4.8 +/-    0.80       7.1 +/-    0.80  0.060 / 0.040
G13     288.8          36.8                4.1 +/-    1.50       6.4 +/-    1.50  0.070 / 0.050
G15     310.7          12.8                4.8 +/-    1.72      12.7 +/-    1.72  0.070 / 0.080
G17     219.7          57.7                6.5 +/-    1.21       7.5 +/-    1.21  0.060 / 0.100
G19     217.5          32.7                6.3 +/-    1.51      10.4 +/-    1.51  0.060 / 0.060
G28     1.6            61.1                4.2 +/-    0.43       4.8 +/-    0.43  0.030 / 0.050
G30     121.9          66.7                8.7 +/-    0.46       9.4 +/-    0.46  0.050 / 0.100