PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-13:12:30
G03     234.6          68.0                7.8 +/-    0.79       8.4 +/-    0.79  0.080 / 0.210
G09     303.4          18.1                6.2 +/-    1.86      14.4 +/-    1.86  0.100 / 0.200
G14     98.2           18.5                6.3 +/-    1.30      14.3 +/-    1.30  0.050 / 0.060
G16     123.0          59.4               10.0 +/-    0.50      11.4 +/-    0.50  0.060 / 0.060
G22     189.6          52.5                8.3 +/-    0.33      10.1 +/-    0.33  0.040 / 0.020
G23     323.1          53.0                6.7 +/-    0.37       8.2 +/-    0.37  0.040 / 0.030
G26     66.8           50.1                6.7 +/-    0.75       8.5 +/-    0.75  0.040 / 0.040
G31     52.9           17.6                6.1 +/-    3.69      14.2 +/-    3.69  0.040 / 0.040