PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/26-21:58:00
G07     55.7           68.0                8.8 +/-    0.61       9.4 +/-    0.61  0.030 / 0.040
G08     51.6           40.0                8.0 +/-    1.19      11.7 +/-    1.19  0.040 / 0.030
G09     178.6          39.7               10.8 +/-    1.55      15.8 +/-    1.55  0.080 / 0.080
G11     119.5          34.3               11.0 +/-    0.72      17.6 +/-    0.72  0.060 / 0.090
G17     198.6          13.7               10.4 +/-    2.27      26.8 +/-    2.27  0.060 / 0.070
G18     102.9          15.2               10.4 +/-    3.08      25.7 +/-    3.08  0.060 / 0.070
G23     161.2          11.7                9.9 +/-    2.53      26.5 +/-    2.53  0.360 / 0.230
G27     38.2           11.6                7.9 +/-    3.18      21.1 +/-    3.18  0.310 / 0.300
G28     268.2          48.5                9.7 +/-    3.88      12.5 +/-    3.88  0.110 / 0.280
G30     329.4          58.2                8.4 +/-    0.30       9.7 +/-    0.30  0.140 / 0.360