PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/18-16:58:10
G01     270.5          40.8                8.7 +/-    1.12      12.4 +/-    1.12  0.050 / 0.050
G03     316.2          32.8                7.6 +/-    2.70      12.6 +/-    2.70  0.040 / 0.060
G10     129.9          17.1                9.6 +/-    1.06      22.8 +/-    1.06  0.070 / 0.130
G11     253.1          20.3               10.5 +/-    3.29      22.8 +/-    3.29  0.080 / 0.150
G14     42.0           51.0                6.3 +/-    0.69       7.9 +/-    0.69  0.040 / 0.040
G22     314.1          53.6                6.7 +/-    1.22       8.2 +/-    1.22  0.030 / 0.030
G25     52.7           17.1                6.8 +/-    1.09      16.0 +/-    1.09  0.040 / 0.070
G26     147.2          25.5               11.2 +/-    2.07      21.7 +/-    2.07  0.050 / 0.080
G31     53.9           73.0                8.8 +/-    1.01       9.2 +/-    1.01  0.100 / 0.080
G32     64.9           31.7                7.8 +/-    0.69      13.3 +/-    0.69  0.080 / 0.090