PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-16:27:50
G01     300.9          36.7                8.0 +/-    2.59      12.3 +/-    2.59  0.070 / 0.100
G03     309.2          12.9                8.7 +/-    2.27      22.8 +/-    2.27  0.070 / 0.080
G10     112.4          35.6                8.6 +/-    0.75      13.6 +/-    0.75  0.030 / 0.030
G11     277.4          27.1                8.5 +/-    1.02      15.9 +/-    1.02  0.020 / 0.030
G14     7.1            64.2                7.9 +/-    0.42       8.7 +/-    0.42  0.090 / 0.180
G22     312.1          32.4                7.6 +/-    1.78      12.6 +/-    1.78  0.100 / 0.140
G25     76.2           18.3                7.9 +/-    2.36      18.1 +/-    2.36  0.040 / 0.040
G31     156.2          72.4                9.8 +/-    0.42      10.3 +/-    0.42  0.050 / 0.040
G32     43.5           47.3                6.9 +/-    1.53       9.0 +/-    1.53  0.060 / 0.060