PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-17:28:10
G01     245.0          32.0                9.9 +/-    1.16      16.6 +/-    1.16  0.030 / 0.040
G03     313.7          52.8                9.9 +/-    0.74      12.1 +/-    0.74  0.030 / 0.040
G14     65.1           38.7                9.5 +/-    1.07      14.2 +/-    1.07  0.070 / 0.100
G16     160.7          23.4               10.9 +/-    1.16      22.2 +/-    1.16  0.060 / 0.080
G22     292.0          72.6               10.6 +/-    0.86      11.1 +/-    0.86  0.070 / 0.040
G23     291.7          24.2               10.0 +/-    1.33      19.9 +/-    1.33  0.040 / 0.040
G26     129.7          42.9               11.9 +/-    0.54      16.6 +/-    0.54  0.080 / 0.170
G31     40.4           51.8                9.7 +/-    0.64      12.0 +/-    0.64  0.080 / 0.180
G32     82.6           18.7                9.2 +/-    1.52      21.0 +/-    1.52  0.080 / 0.160