PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/28-19:43:00
G03     194.6          35.0               14.0 +/-    1.78      22.2 +/-    1.78  0.030 / 0.040
G07     274.2          27.4               12.5 +/-    3.65      23.3 +/-    3.65  0.030 / 0.040
G08     154.7          13.3               16.8 +/-    3.11      43.5 +/-    3.11  0.090 / 0.300
G09     318.3          45.1                9.1 +/-    1.38      12.2 +/-    1.38  0.100 / 0.310
G16     53.4           54.7               12.2 +/-    0.31      14.5 +/-    0.31  0.110 / 0.170
G22     180.9          20.0               14.6 +/-    3.09      32.1 +/-    3.09  0.110 / 0.200
G23     11.6           79.2               11.3 +/-    0.85      11.5 +/-    0.85  0.060 / 0.120
G26     43.6           25.2               10.9 +/-    1.30      21.1 +/-    1.30  0.060 / 0.120
G27     116.4          24.8               16.6 +/-    1.77      32.6 +/-    1.77  0.030 / 0.030