PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/21-20:28:10
G01     127.1          11.0              -10.0 +/-   38.19     -27.3 +/-   38.19  0.030 / 0.040
G07     63.9           66.9               12.2 +/-    0.25      13.1 +/-    0.25  0.030 / 0.050
G08     50.1           38.6               11.5 +/-    1.64      17.0 +/-    1.64  0.090 / 0.250
G09     178.7          37.7               14.0 +/-    1.14      21.2 +/-    1.14  0.120 / 0.270
G11     117.2          35.6               14.4 +/-    0.86      22.6 +/-    0.86  0.080 / 0.120
G17     198.9          15.5               15.8 +/-    2.76      38.7 +/-    2.76  0.100 / 0.100
G18     101.4          16.3               12.1 +/-    1.86      29.2 +/-    1.86  0.060 / 0.070
G27     37.6           9.4                 8.6 +/-    1.58      24.4 +/-    1.58  0.060 / 0.090
G28     271.0          49.5               13.0 +/-    3.03      16.5 +/-    3.03  0.040 / 0.030
G30     332.8          60.7               11.3 +/-    0.39      12.7 +/-    0.39  0.040 / 0.030