PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/31-19:27:50
G01     233.2          23.3               14.6 +/-    2.78      29.8 +/-    2.78  0.040 / 0.150
G03     301.9          63.4               11.2 +/-    1.26      12.4 +/-    1.26  0.050 / 0.060
G14     78.2           30.4               12.3 +/-    0.80      21.4 +/-    0.80  0.040 / 0.040
G16     154.7          35.6               17.1 +/-    1.05      26.8 +/-    1.05  0.040 / 0.040
G22     243.7          75.6               12.2 +/-    0.67      12.5 +/-    0.67  0.060 / 0.120
G23     301.1          31.8               12.8 +/-    1.17      21.6 +/-    1.17  0.060 / 0.130
G26     113.1          51.2               14.8 +/-    0.58      18.4 +/-    0.58  0.100 / 0.170
G31     42.3           40.0                9.3 +/-    1.07      13.5 +/-    1.07  0.110 / 0.200
G32     92.8           11.1               12.3 +/-    2.09      33.4 +/-    2.09  0.080 / 0.130