PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-20:42:50
G01     43.4           19.4               10.2 +/-    3.05      22.8 +/-    3.05  0.090 / 0.200
G06     175.1          35.5               13.8 +/-    1.58      21.7 +/-    1.58  0.190 / 0.220
G13     241.5          24.7               14.1 +/-    1.71      27.7 +/-    1.71  0.080 / 0.100
G15     275.2          13.5               10.0 +/-    1.97      25.8 +/-    1.97  0.080 / 0.100
G17     339.9          74.7               12.7 +/-    0.41      13.1 +/-    0.41  0.470 / 0.280
G19     264.1          65.5               12.9 +/-    0.64      14.0 +/-    0.64  0.300 / 0.280
G24     317.6          16.1                9.4 +/-    4.03      22.9 +/-    4.03  0.040 / 0.060
G28     66.4           48.6               11.6 +/-    1.50      14.9 +/-    1.50  0.040 / 0.050
G30     153.2          30.9               13.8 +/-    1.11      23.7 +/-    1.11  0.070 / 0.090