PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/25-19:57:40
G01     231.2          21.6               13.8 +/-    1.70      29.3 +/-    1.70  0.030 / 0.030
G03     298.2          65.0               11.8 +/-    0.64      12.9 +/-    0.64  0.030 / 0.030
G14     80.6           28.8               10.1 +/-    1.19      18.1 +/-    1.19  0.070 / 0.130
G16     153.5          38.0               15.3 +/-    1.23      23.0 +/-    1.23  0.080 / 0.120
G22     234.6          74.8               12.6 +/-    0.44      13.0 +/-    0.44  0.060 / 0.070
G23     302.8          33.3                8.7 +/-    1.67      14.3 +/-    1.67  0.040 / 0.100
G26     109.4          52.4               12.3 +/-    0.65      15.1 +/-    0.65  0.110 / 0.220
G31     42.9           38.0                8.8 +/-    1.45      13.2 +/-    1.45  0.080 / 0.170
G32     94.6           9.7                11.6 +/-    2.00      32.6 +/-    2.00  0.060 / 0.090