PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-21:27:50
G01     254.1          38.9               13.8 +/-    1.19      20.5 +/-    1.19  0.050 / 0.050
G03     316.8          37.2               10.2 +/-    1.20      15.5 +/-    1.20  0.050 / 0.040
G11     245.2          14.2               12.9 +/-    1.76      32.9 +/-    1.76  0.080 / 0.090
G14     49.3           48.2                9.1 +/-    1.15      11.8 +/-    1.15  0.070 / 0.090
G22     310.2          59.6               10.3 +/-    1.18      11.8 +/-    1.18  0.070 / 0.080
G23     282.5          16.1               11.9 +/-    2.80      28.9 +/-    2.80  0.070 / 0.070
G25     44.4           12.7                8.8 +/-    1.85      23.0 +/-    1.85  0.100 / 0.130
G26     141.0          33.6               13.0 +/-    1.42      21.3 +/-    1.42  0.090 / 0.130
G31     44.2           63.9                8.3 +/-    0.90       9.1 +/-    0.90  0.130 / 0.330
G32     73.1           24.9               10.5 +/-    1.15      20.6 +/-    1.15  0.130 / 0.220