PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/19-04:43:00
G01     74.4           33.1                4.8 +/-    0.94       7.9 +/-    0.94  0.050 / 0.090
G07     135.4          31.5                5.9 +/-    1.15      10.0 +/-    1.15  0.070 / 0.080
G11     54.6           31.5               -3.3 +/-    1.41      -5.6 +/-    1.41  0.040 / 0.050
G13     277.9          38.3                4.4 +/-    1.58       6.5 +/-    1.58  0.040 / 0.040
G15     306.4          13.8                1.0 +/-    1.32       2.6 +/-    1.32  0.070 / 0.090
G17     228.4          69.3                6.7 +/-    0.58       7.1 +/-    0.58  0.050 / 0.080
G19     221.6          37.1                6.3 +/-    1.65       9.7 +/-    1.65  0.030 / 0.030
G28     9.5            60.6                3.4 +/-    1.61       3.8 +/-    1.61  0.030 / 0.020
G30     131.9          66.3                6.5 +/-    0.34       7.0 +/-    0.34  0.090 / 0.090